Stuart Bloom

Stuart Bloom is the owner of The Comic Center of Pasadena, a spot ritualistically visited by Sheldon, Leonard, Raj and Howard on a regular basis.  Stuart is low key, but has still managed to ask out both Penny and Amy Farrah Fowler.  He has vast knowledge of comic books and is apparently friends with one of Sheldon's enemies, Wil Wheaton.

My favorite Stuart quote, "OK, if you're gonna question the importance of an actor's signature on a plastic helmet from a movie based on a comic book, then all of our lives have no meaning!"

(Stuart Bloom is played by Kevin Sussman.)